234 A New Locality for Cordylophora. [ April, 
possesses a ramified spadix. 2. It is the only compound hydroid 
ever found in fresh water, and 3. The reproductive’ zooids are 
developed in a chitinous cup, while the nutritive zodids are not so 
developed or protected. 
ne of the nutritive hydranths showed, in a slight degree, the 
polystomatous condition which the zodids of this species at times 
present; and which has been described and figured by Mr. Hugh 
Price, of Oxford, England! Mr. Price’s specimens were obtained 
from the Victoria docks, and the polystomatous hydranths were 
found only on certain colonies. Some of these hydranths pos- 
sessed as many as five distinct mouths, each one of which was 
supplied with a series of tentacles; though separated throughout 
their entire length, they remain united at the base, thus forming 
a small closely united group from a single hydranth. As the 
different mouth-bearing parts were very small and without tenta- 
cles in some of Mr. Price’s specimens, and others were interme- 
diate in size, he is inclined to consider this a regular mode of 
increase in the hydranths of this species. The single specimen 
of this kind obtained by us possessed two mouth-bearing portions, 
each with a set of tentacles and united at the base. Unfortunately 
it was not preserved and I have been unable to find any others in 
a similar condition. 
There is but one other species of Cordylophora and it may not 
be out of place to mention it. Kirchenpauer found specimens 
of a compound hydroid growing upon buoys at highest tide lim- 
its in the river Elbe. These he describes in a letter to Busk as a n 
new species of Cordylophora, giving them the specific name of 
albicola, It differs from C. lacustris in forming smaller colonies, 
in having the branches ated opgan and the perisarc 
terminates abruptly. 
Habitat—Grand Canal docks, Dublin, Allman; Commercial 
and West Indian docks, London, Bowerbank and Allman; a fresh- 
water cistern near London, Busk; Agricultural drains near Lyme 
Regis, Dr. Lowe; Canal near Osten: Van Beneden; Schleswig, 
Semper; neighborbiood of Stockholm, Sweden, Retzius; neat 
Rostock, F. E. Schulze; Newport, Rhode Island, Leidy; Schuy!- 
kill river, near Philadelphia, Leidy; in basins in the Jardin des @ 
Plantes, Perrier; The Baltic, Mobius; Curtis’ creek, near Balti- 
more, Md., S. F. . Clarke. 
Quarterly Microscopical Journal, Vol. xxiv, New Series xvi, folio 23. , 
on 
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